package com.sky.service.impl;

import com.alibaba.fastjson.JSON;
import com.alibaba.fastjson.JSONObject;
import com.sky.constant.MessageConstant;
import com.sky.dto.UserLoginDTO;
import com.sky.entity.User;
import com.sky.exception.LoginFailedException;
import com.sky.mapper.UserMapper;
import com.sky.properties.WeChatProperties;
import com.sky.service.UserService;
import com.sky.utils.HttpClientUtil;
import lombok.extern.slf4j.Slf4j;
import org.apache.http.impl.client.HttpClients;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.time.LocalDateTime;
import java.util.HashMap;
import java.util.Map;

@Service
@Slf4j
public class UserServiceImp implements UserService {
    @Autowired
    private WeChatProperties weChatProperties;
    @Autowired
    private UserMapper userMapper;
    @Override
    public User wxLogin(UserLoginDTO userLoginDTO) {
        //调用微信接口，获得当前微信用户的openid
        //https://api.weixin.qq.com/sns/jscode2session
     /*   Map<String, String> map=new HashMap<>();
        map.put("appid",weChatProperties.getAppid());
        map.put("secret",weChatProperties.getSecret());
        map.put("js_code",userLoginDTO.getCode());
        map.put("grant_type","authorization_code");
        String json=HttpClientUtil.doGet("https://api.weixin.qq.com/sns/jscode2session",map);
        JSONObject jsonObject= JSON.parseObject(json);
        String openid=jsonObject.getString("openid");*/
        String openid=getOpenid(userLoginDTO.getCode());
        //判断openid是否为空，如果为空表示登录失败哦，抛出业务异常
        if(openid==null){
            throw new LoginFailedException(MessageConstant.LOGIN_FAILED);
        }
        //判断是不是新用户
        User user=userMapper.getByOpenId(openid);
        if(user==null){
           user= User.builder().openid(openid).createTime(LocalDateTime.now()).build();
           userMapper.insert(user);
        }
        //返回这个用户对象
        return user;
    }
    private  String getOpenid(String code){
        //调用微信接口，获得当前微信用户的openid
        //https://api.weixin.qq.com/sns/jscode2session
        Map<String, String> map=new HashMap<>();
        map.put("appid",weChatProperties.getAppid());
        map.put("secret",weChatProperties.getSecret());
        map.put("js_code",code);
        map.put("grant_type","authorization_code");
        String json=HttpClientUtil.doGet("https://api.weixin.qq.com/sns/jscode2session",map);
        JSONObject jsonObject= JSON.parseObject(json);
        String openid=jsonObject.getString("openid");
        return openid;
    }
}
